Gauge for concrete stair construction

ABSTRACT

A gauge for concrete stair construction comprising a stringer extending in a direction corresponding to the rise and run of the completed stair, a plurality of flat gauge brackets secured to the stringer, each bracket having an edge extending in a direction, generally vertical, and bearing against the riser form, the bracket having spacer structure secured to the rear edge of the bracket and contacting the underside of the stringer and the upper edge of the riser form to hold same in place. The flat gauge brackets may be rocked in a vertical plane, so that the riser form may be given a desired amount of kick back.

United States Patent 1,555,750 9/1925 ODonnell Primary ExaminerJ.Spencer Overholser Assistant Examiner-John S. Brown Att0rneyRichard C.Lindberg ABSTRACT: A gauge for concrete stair construction comprising astringer extending in a direction corresponding to the rise and run ofthe completed stair, a plurality of flat gauge brackets secured to thestringer, each bracket having an edge extending in a direction,generally vertical, and bearing against the riser form, the brackethaving spacer structure secured to the rear edge of the bracket andcontacting the underside of the stringer and the upper edge of the riserform to hold same in place. The flat gauge brackets may be rocked in avertical plane, so that the riser form may be given a desired amount ofkick back.

PATENTEUomznsn 3.612472 INVENTOR HENRY STElGERWALDT J R- -fi iLumATTORNEY GAUGE FOR CONCRETE STAIR CONSTRUCTION It is a principle objectof the invention to provide an improved gauge for laying out andconstructing concrete stairs, which gauge can be readily adjusted in thefield by the carpenter or formsetter.

The drawings:

FIG. 1 is an elevational view showing the gauge according to the presentinvention in position for the construction of a concrete stair;

FIG. 2 is a detailed isometric view thereof;

FIG. 3 is an elevational view of a flat gauge bracket employed with thegauge seen in FIG. 1;

FIG. 4 is an end view thereof;

FIG. Sis an isometric view thereof; and

' FIG. 6 is a view similar to FIG. 1 showing the gauge adjusted forkickback of the stair tread.

The improved gauge according to the present invention is referred to bythe reference numeral 10 and is employed in the construction of aconcrete stair CS. The gauge includes a stringer 11 extending in adirection according to the rise and run of the stair CS.

Stringer 11 has a plurality of gauge members 12 spaced at equaldistances throughout the length thereof for locating the front of therisers R and the tread surfaces T of the finished stair CS.

Each of the gauge members 12 consists of a flat plate 13 generally inthe form of a trapezoid as shown and provided with a plurality of holesH therein adapted to receive nailing devices, not shown, for securingsaid gauge member 12 in adjustable positions to the stringer ll.

A flange 14 extends laterally from plate 13 and is adapted to bearagainst a riser from RF which locates the front face of riser R. Flange14 may also be provided with holes H for nailing devices, not shown, tosecure riser from RF to flange 14.

Structure is provided for locating the gauge member 12 with respect tostringer l1 and consists of a pair of dowels l6 and 17, welded orotherwise secured to the back face of flange l4. Dowel 16 contacts theunderside of stringer 11, while dowel 17 bears against the upper edge ofriser form RF to hold same against the buoyant forces of the wetconcrete during pouring of the stair CS.

As seen in FIG. 1 the gauge members 12 are located against plumblines PLmarked on the stringer 11. In the event the stair is constructed withkickback as seen in FIG. 6 kickback lines KBL are located on thestringer 11 and the plate 13 rotated around dowel 16 to give the properposition to the gauge member 12 for such kickback.

lclaim:

1. In an improved gauge for concrete stair construction comprised of aseries of risers and treads;

a. a stringer spaced from said risers and treads and extending in adirection corresponding to the rise and run of the completed stair;

b. a plurality of gauge members spaced throughout the length of saidstringer for locating the top of the treads of the finished stair andthe front of the risers thereof;

c. each of said gauge members including a riser member disposed againstthe adjacent riser of said concrete stair;

d. each of said gauge members being adjustable in position on saidstringer and being adapted to cooperate with said riser member forconstructing said stair, and including 1. a flat member adjustablysecured to said stringer along a side thereof,

2. a flange extending laterally from said flat member and in engagementwith said riser member along the face thereof to hold the same inposition,

3. a first member extending laterally of said flat member and secured tosaid flange and bearing against the underside of said stringer,

4. a second member extending laterally of said flat member and securedto said flange in generally parallel relation to said first member forexerting a downward force against said riser member. 2. A gaugeaccording to claim 1 wherein each of said gauge members is in the formessentially of a flat plate having a plurality of holes therein adaptedto receive nailing devices for securing said gauge member in adjustablepositions to said stringer.

3. A gauge according to claim 1 wherein said flat member has a pluralityof holes therein adapted to receive nailing devices for securing saidflat member in adjustable positions to said stringer with said firstmember bearing against the underside of said stringer.

1. In an improved gauge for concrete stair construction comprised of aseries of risers and treads; A. A STRINGER SPACED FROM SAID RISERS ANDTREADS AND EXTENDING IN A DIRECTION CORRESPONDING TO THE RISE AND RUN OFTHE COMPLETED STAIR; B. A PLURALITY OF GAUGE MEMBERS SPACED THROUGHOUTTHE LENGTH OF SAID STRINGER FOR LOCATING THE TOP OF THE TREADS OF THEFINISHED STAIR AND THE FRONT OF THE RISERS THEREOF; C. EACH OF SAIDGAUGE MEMBERS INCLUDING A RISER MEMBER DISPOSED AGAINST THE ADJACENTRISER OF SAID CONCRETE STAIR; D. EACH OF SAID GAUGE MEMBERS BEINGADJUSTABLE IN POSITION ON SAID STRINGER AND BEING ADAPTED TO COOPERATEWITH SAID RISER MEMBER FOR CONSTRUCTING SAID STAIR, AND INCLUDING
 1. AFLAT MEMBER ADJUSTABLY SECURED TO SAID STRINGER ALONG A SIDE THEREOF, 2.A FLANGE EXTENDING LATERALLY FROM SAID FLAT MEMBER AND IN ENGAGEMENTWITH SAID RISER MEMBER ALONG THE FACE THEREOF TO HOLD THE SAME INPOSITION,
 2. A gauge according to claim 1 wherein each of said gaugemembers is in the form essentially of a flat plate having a plurality ofholes therein adapted to receive nailing devices for securing said gaugemember in adjustable positions to said stringer.
 2. A FLANGE EXTENDINGLATERALLY FROM SAID FLAT MEMBER AND IN ENGAGEMENT WITH SAID RISER MEMBERALONG THE FACE THEREOF TO HOLD THE SAME IN POSITION,
 3. A FIRST MEMBEREXTENDING LATERALLY OF SAID FLAT MEMBER AND SECURED TO SAID FLANGE ANDBEARING AGAINST THE UNDERSIDE OF SAID STRINGER,
 3. A FIRST MEMBEREXTENDING LATERALLY OF SAID FLAT MEMBER AND SECURED TO SAID FLANGE ANDBEARING AGAINST THE UNDERSIDE OF SAID STRINGER,
 3. A gauge according toclaim 1 wherein said flat member has a plurality of holes thereinadapted to receive nailing devices for securing said flat member inadjustable positions to said stringer with said first member bearingagainst the underside of said stringer.
 4. A SECOND MEMBER EXTENDINGLATERALLY OF SAID FLAT MEMBER AND SECURED TO SAID FLANGE IN GENERALLYPARALLEL RELATION TO SAID FIRST MEMBER FOR EXERTING A DOWNWARD FORCEAGAINST SAID RISER MEMBER.
 4. A SECOND MEMBER EXTENDING LATERALLY OFSAID FLAT MEMBER AND SECURED TO SAID FLANGE IN GENERALLY PARALLELRELATION TO SAID FIRST MEMBER FOR EXERTING A DOWNWARD FORCE AGAINST SAIDRISER MEMBER.